NAS560HK4-4

Bolt

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Description:

Fastener Length: 51/64", Thread: 1/4-28, Thread Length: 9/16"

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NAS560HK4-4 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches minimum and 0.571 inches maximum
Fastener Length:
0.761 inches minimum and 0.806 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.452 inches minimum and 0.510 inches maximum
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.250 inches
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
140000 pounds per square inch
Hardness Rating:
248.0 brinell standard minimum and 321.0 brinell standard maximum
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Screw Material:
Iron alloy 660
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 51/64

Additional Information

SKU / Model: NAS560HK44
NSN: 5305-00-901-7254
FSC: Screws / 5305
Product Series: NAS560HK4
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.6080
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS560HK4-4_Military-Fasteners-com.pdf
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More NAS560HK4 machine bolts

NAS560HK4-7

Fastener Length: 63/64in., Thread: 1/4-28, Thread Length: 9/16in.

NAS560HK4-6

Fastener Length: 59/64", Thread: 1/4-28, Thread Length: 9/16"

NAS560HK4-5

Fastener Length: 55/64", Thread: 1/4-28, Thread Length: 9/16"

NAS560HK4-2

Fastener Length: 43/64", Thread: 1/4-28, Thread Length: 29/64"

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Excellent variety, quality, and service. And, small orders are no problem. Military Fasteners is a tinker's delight and a great resource. I also appreciate their using the USPS. So many companies ship UPS only and to Alaska the UPS price is ridiculous. Thank you.

5.0

Another good experience with Military Fasteners, and our Sales Rep, Dan Hunter. We needed hardware for an older aircraft model, and Dan's expertise was exceptional. He quickly identified fasteners, even for parts with unclear descriptions, and provided invaluable technical assistance. The supporting data was spot-on, verified by our technicians. Despite finding slightly lower prices elsewhere, the unmatched service and expertise from Military Fasteners, particularly Dan, make them our preferred choice. Our order was delivered ahead of schedule. Highly recommend MilFast for top-notch service and technical support!

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I've never received an incorrect order from ACS, even when dealing with small hardware such as nuts, washers, screws, etc. Shipment is always fast and with reasonable shipment prices for my needs. Even my smallest of orders is processed and ship quickly. I'm a long-time ACS customer and I expect I will be for a long time.

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